include/linux/byteorder/Kbuild - linux-imx - Git at Google

 unifdef-y += big_endian.h
 unifdef-y += little_endian.h
 unifdef-y += swab.h
 unifdef-y += swabb.h
	unifdef-y += big_endian.h
	unifdef-y += little_endian.h
	unifdef-y += swab.h
	unifdef-y += swabb.h